Steam-pump



A(No'lvroal.) zsheets-sheen 1.

J. T. LBPTWIK.

STEAM PUMP.

Patented 00t1.- 12, 1886.

I Wmme/o (No Model.) A z'sheets-sneet 2. J. T.4 LBFTWICK. f

STEAM PUMP.

No. 350,632. Patented Oct. 12, 1886.

N4 PETERS, Photo-Limognpher, Waihngiun, D. Cy

-Fig. 2 is a top pla-n view of the same.

VUNITED STATES PATENT OFFICE.

JOHN vTAYLOR LEFTWIOK, OF IGREENSBURG, KENTUCKY.

VSTEAM-PUIVIP.

SPECFICATION forming part of Letters Patient No. 350.632, dated Octoberl2, 1886.

,V Application filed .Tune i6, 1886. Serial Noflf. (No model.)

To all whom t may concern:

Be it known that l, JOHN TAYLOR LEFT- wIcK, a citizen ofthe UnitedStates, residing at Greensburg, in the county of Green and State ofKentucky, have invented a new and useful Improvement in Steam-Pumps, ofwhich the following is a specification.

My invention relates to an improvement in steam-pumps; and it consistsin the peculiar construction and combination of devices, that will bemore fully set forth hereinafter, and particularly pointed out in theclaim.

In the drawings, Figure 1 is a side elevation ofa steam-pump embodyingmy improvements. Fig. 3 is a vertical longitudinal sectional view on theline x x of Fig. 2.

A represents the base or bed plate, on one' end of which issecured'thecylinder B of an ordinary reciprocating high-pressure steamengine, whichis provided with the usual piston,0, the steam-chest D, and the valve E.On the opposite end of the bed-plate is secured a pump-cylinder, F, inwhich works a piston 0r plunger, G, which is connected to the piston Gby means of a rod, H.

A I represents a longitudinal frame,which connects the opposing headsofthe cylinders B and F, and on one side of the said frame, at thecenter thereof, is bolted a vertical standard,

K, while the opposite side oljthe frame forms a horizontal guideway, L.From the outer head of the cylinder B project lugs or brackets M,inwhich is journaled a transverse shaft, N. To one end of the said shaftis secured a crank-wheel,0, and to the opposite end thereof is attacheda fly-wheel, P. An eccentric, R, is also attached to the shaft M on theinner side of the fly-wheel.

S represents a cross head,which is bolted to the piston-rod H andprojects laterally from the guideways L, and works on the said guideways. A pitman, U, connects the outer end of the cross-head S with thecrank-pin of the wheel O.

T represents" a rock-shaf t, which is journaled in a bearing formed onfthe upper end of the standard K. To the outer end of the rocksha-ft T.is secured a rocking arm, U', which is connected to the eccentric R hymeans of an eccentric-rod, V, and an eccentric-strap, V. To the innerend of the shaft T is 'secured a double-ended rocking arm, NV. To theupper end of the rocking arm XV is attached a valverod, X, the inner endof which is attached to the valve E. The said rod passes through astuffing-box in the front wall of the steamchest D.

Y represents a valve, which is located in a chamber, Z, on the upperside of the cylinder F. Inlet ports or channels a extend from near thecenter of the chamberZ to the ends of the cylinder F, and communicatingwith the said inlet-channels is an outlet channel or port, I), whichextends through one side of the cylinder F, -and to whicha-'discharge-pipe, C, is attached. The valve Y works over the channels aand b,constantly covering the channel b and alternately opening andclosing the inner rends of the channels a as the said valve isreciprocated in the chamber Z. A'valve-rod, d, connects the valveYwiththe lower end ofthe rocking arm WV. e represents a supply-pipe, which isconnected at one end to the chamber Z, and which extends to a tank orreservoir or other suitable source of water.

The operation of my invention is as follows:

When the steam-engine is operated-in the usual manner, the motion of itspiston C is communicated to the piston G of the pump-cylinder,

and the valve Y is also operated in the chamber Z simultaneouslywith thepiston G- and in the opposite'direction. XVhen the piston G is attherear end of the cylinder, the channel a, communicating with the rearend of the cylinder, is opened by the valve Y and the channel in thefront end of the cylinder is closed by the said valve. it creates apartial vacuum in the rear end of the cylinder, and thereby causes thewater to he drawn through the pipe e into the chamber Z, and from thencethrough the rear channel,a, into the rear endof the cylinder. which waspreviously drawn into the front end of the cylinder F by the rearwardstroke of the piston is expelled therefrom through the exhaust-openingb, as will bel very readily understood, thus causing a stream of waterto be forced from the cylinder F at each movement back and forth of thepiston.

A steam -pump thus constructed is cheap and simple, and is exceedinglypowerful, being adapted to raise a considerable volume of water to agreat height.

Vhen the piston moves forward.

The water IOO Having thus described my invention, I clam- Thecolnhimltion, with thc stcamengne, the pnmp-cylinchr F, and the frameconnecting the opposing heads of the steam and pump cylinders, of thepiston Cr in thc pump-cylinder, the rod II, connecting thc said pistonto thc Stea1n-piston, the cross-head attached to the rod H, the Shaft N,having thc C-1fank-WhceI O and the eccentric R, the pitman U, connectingthe cross-hcan'i tc the erank-wheehthc standard K, Secured to the framebetween thc cy]inders,the rock-shaft rI in the said standard, therocknrm V at one end of thc said shaft and connected t0 the eccentric bythe rod V and Strap T2, and the donble'ended rock-arm "W on the innerend of the Shaft T, one end of theisaid arm being attached to the steamcnt-off valve hy the rod X, and the other end thereof being attached tothe valve Y of the pump by the rod d, the cylinder F having thcinlet-chair nels a and the outlet channel b, the inner ends of the saidchannels being covered by the said valve Y, Substantially as described.

In teStimonyT that I claim the foregoing as my own I have hereto affixedmy signature in presence of two Witnesses.

J OIIN TAYLOR LEFTWICK.

\Vit1icsscs:

Guns. D. ALLEN, B. F. HIMUJITON.

